Finish GPG key setup

[Christopher Francisco]

Copied from readme:

• Copying the key to clipboard

$ gpg --list-secret-keys --keyid-format LONG
$ gpg --armor --export FINGERPRINT | pbcopy

https://docs.github.com/en/authentication/managing-commit-signature-verification/generating-a-new-gpg-key

need to get the FINGERPRINT from the output of list-secret-keys

[Christopher Francisco]

1. Install GPG CLI tool

brew install gpg2

2. Create the key with a size of 4096

$ gpg --full-generate-key

3. Add this to ~/.zshrc.aliases

export GPG_TTY=$(tty)

3. Get the key ID, print key and add to github

$ gpg --list-secret-keys --keyid-format LONG
$ gpg --armor --export <key>

3. Modify .gitconfig.[local|enterprise] and add

[user]
  signingkey = <key>

[commit]
  gpgsign = true